1. Fit Measurements. The bathroom ceiling fan grille is 12.2 x 12.2 " in size. To ensure a proper fit, please confirm two measurements before purchasing: your ceiling opening should be under 12.2", and the distance between the mounting slots on your exhaust fan must be between 8.8" and 9.8". 2. Built with ABS. The bathroom vent cover is built with ABS material for durable service. Compared with metal covers, the plastic grille cover minimizes condensation. 3. Even and Wide Distribution. The square bathroom fan grille allows for 360° uniform air intake. The step-down structure design distributes airflow evenly, and provides wider, gentler coverage, swiftly removing moisture and odors. 4. Easy to Install. Installation takes you just one minute. A pair of springs is already installed on the back of the replacement grille cover, simply snap them into the slots of your fan and you're good to go. No tools are needed. Saving on your time and installation costs. 5. Ideal for Home Improvement. This bathroom fan replacement cover is ideal for use with square ceiling exhaust fans, bathroom fans and ventilation fans. Modern white grille cover elegantly conceals the fan internals while seamlessly with any room decoration. This is an universal bathroom fan grille that is designed to be compatible with the most used bath fans in the US.